ADGM · Adagio Medical Holdings, Inc. · Holdings

$0.12 +0.00 (+0.67%) At close · Oct 20

Market Cap

$2.62M

22.21M

Volume · Oct 20 775.85K Avg daily vol (3M) 9.48M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP → See every holder of ADGM: 13F, 13D and 13G, insiders and funds →

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.

Quarter:

Holders: 24

Total Value: $9,818,670

Total Shares: 15,073,019

Institutional Ownership Trend

8 quarters

Holder Concentration

Across 24 13F filers · Δ vs Mar 31, 2026

Top Holder

65.6%

+2.5 pts

Top 5

94.3%

−0.2 pts

Top 10

98.7%

−0.1 pts

HHI

4,521

Highly concentrated+291

Who Holds ADGM

Last 8 quarters through Jun 30, 2026

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026: 24 filers, like-for-like change -3.7%; actively managed books -4.0%; index-like books +13.5%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	94.2%	12	-0.2%	1	2
Adviser	4.6%	1	-45.8%	0	0
Bank	0.6%	6	+37.3%	2	1
Holding company	0.0%	1	0.0%	0	0
Non-US	0.0%	0	—	0	0
Broker-dealer	0.0%	0	—	0	0
Unknown	0.6%	4	+16.1%	1	0

Style	Share	Filers	Change	New	Exited
Index-like	1.8%	5	+13.5%	0	0
Systematic-like	8.0%	4	+1.3%	1	0
Concentrated	0.1%	2	0.0%	0	0
Diversified active	90.1%	13	-4.5%	3	3
Not measured	0.0%	0	—	0	0
Unknown	0.0%	0	—	0	0

Turnover	Share	Filers	Change	New	Exited
Low turnover	0.8%	5	-24.3%	0	1
Medium turnover	84.3%	10	-0.4%	2	2
High turnover	13.8%	7	-21.2%	2	0
Unknown	1.1%	2	+74.3%	0	0
Not measured	0.0%	0	—	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	7.0%	5	-33.3%	0	0
Medium horizon	10.0%	3	-1.8%	0	0
Long horizon	9.6%	12	-3.1%	3	3
Unknown	73.4%	4	+0.1%	1	0
Not measured	0.0%	0	—	0	0

13F book size	Share	Filers	Change	New	Exited
Under $1B	7.3%	4	-36.0%	0	0
$1B to $10B	74.3%	6	-0.2%	0	1
$10B to $100B	16.3%	4	-0.1%	1	1
$100B or more	2.1%	10	+24.3%	3	1
Not measured	0.0%	0	—	0	0

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	0.0%	1	-98.2%	0	1
Pooled investment vehicles	92.9%	9	-0.2%	1	1
Registered funds and BDCs	1.2%	2	+14.1%	0	0
Unknown	5.8%	12	-38.8%	3	1

Private funds	Share	Filers	Change	New	Exited
Hedge funds	92.9%	9	-0.4%	1	2
Venture capital funds	0.0%	1	0.0%	0	0
No private funds	1.2%	2	+14.1%	0	0
Unknown	5.8%	12	-38.8%	3	1

Location	Share	Filers	Change	New	Exited
United States	99.7%	20	-3.7%	2	3
Outside the US	0.3%	4	-6.0%	2	0

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Conviction and Crowding

24 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders

0.000% of filers hold it in their top 10

Mar 31, 2026: 0

Holders above 5%

median weight 0.000%

Mar 31, 2026: 0

Crowding

66.4%

of shares outstanding, 100th percentile

Mar 31, 2026: 69.2%

Private-fund advisers

63.1%

of shares outstanding

Institutional ownership

67.9%

68.8% of the estimated free float

Top 10 holders

98.6%

of 13F shares, Herfindahl 0.451

Active holders

-4.0%

like-for-like share change of active filers

5% stakes on record

0 13D, 5 13G (3 institutional, 2 passive, 0 exempt)

How long holders have held it value-weighted 6.6 quarters

Under 1 year 23.5% 1 to 3 years 76.5% 3 years or more 0.000% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost

$3.58

estimated per share

Mar 31, 2026: $3.48

Quarter-end price

$0.65

implied by 13F values

Estimated gain or loss

-81.8%

price against the estimated cost

Estimated at a loss

100.0%

of costed 13F value

Estimated cost covers 98.8% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies ADGM's active holders also own, quarter ended Jun 30, 2026

#	Company	Shared holders	Similarity
1	IBIO iBio, Inc.	3	0.354
2	RACC Research Alliance Corp III	3	0.316
3	CBIO Crescent Biopharma, Inc.	3	0.297
4	OVID Ovid Therapeutics Inc.	3	0.281
5	HLXC Helix Acquisition Corp. III	3	0.267
6	AVR Anteris Technologies Global Corp.	3	0.261
7	SION Sionna Therapeutics, Inc.	3	0.240
8	IMVT Immunovant, Inc.	3	0.240
9	ORKA Oruka Therapeutics, Inc.	4	0.218
10	SVRA Savara Inc	3	0.213

Shareholder Targets

13F filers that own its peers but not ADGM, quarter ended Jun 30, 2026

Found through its holder-overlap peers: IBIO, RACC, CBIO, OVID, HLXC, AVR, SION, IMVT, ORKA, SVRA, AVTX, PTGX, RYTM, CELC, TRVI, PRAX, SYRE, DNTH, COGT, QURE. 872 filers in all.

#	Filer	In peers	Of book	Largest peers
1	BlackRock, Inc. Holding company, Index-like	$6,059,594,853 18 held	0.090%	PTGX, PRAX, RYTM
2	FMR LLC Holding company, Diversified active	$6,007,266,368 18 held	0.270%	SYRE, COGT, ORKA
3	STATE STREET CORP Bank, Index-like	$2,817,153,603 18 held	0.080%	PTGX, PRAX, RYTM
4	BAKER BROS. ADVISORS LP Registered adviser, Concentrated	$2,357,617,036 7 held	11.9%	CELC, RYTM, PRAX
5	Jupiter Topco LLC Unknown, Diversified active	$2,182,006,864 15 held	0.890%	PRAX, PTGX, COGT
6	VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active	$2,126,041,119 17 held	0.100%	PRAX, PTGX, RYTM
7	RTW INVESTMENTS, LP Registered adviser, Diversified active	$2,106,535,159 11 held	18.0%	PTGX, SYRE, CELC
8	PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser, Diversified active	$1,865,164,247 17 held	0.190%	PRAX, RYTM, PTGX
9	RA CAPITAL MANAGEMENT, L.P. Registered adviser, Concentrated	$1,413,470,440 7 held	12.5%	RYTM, SION, ORKA
10	WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active	$1,372,762,040 15 held	0.240%	PTGX, DNTH, COGT

Fund Ownership of ADGM by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 0.86% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.37%	+0.08 pp	82,805	3
Index ETFs	0.49%	+0.31 pp	108,954	2
Active ETFs	0.00%	0.00 pp	0	0
Active funds	0.00%	0.00 pp	0	0
Unclassified	0.00%	0.00 pp	0	0
All registered funds	0.86%	+0.39 pp	191,759	5

How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

New and Sold Out count only filers that reported a 13F for both quarters: a first-time filer's book is not a buy, and a fund that has not filed, or withheld its positions under confidential treatment, has not sold.

Holder count: +1

Institutional value: -45.5%

Shares held: -3.7%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega VANGUARD CAPITAL MANAGEMENT LLC	+69,346	108,954
Mega CITIGROUP INC	+13,254	13,255
Mega NORTHERN TRUST CORP	+9,277	30,875
Mid Tower Research Capital LLC (TRC)	+4,252	6,454
Mid PERCEPTIVE ADVISORS LLC	+10	9,876,586

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Small Sio Capital Management, LLC	−589,472	698,989
Mega GEODE CAPITAL MANAGEMENT, LLC	−46,126	79,115
Small SILVERARC CAPITAL MANAGEMENT, LLC	−27,612	224,360
Mid XTX Topco Ltd	−5,197	18,153
Mega BANK OF AMERICA CORP /DE/	−1,326	11,531

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mega CITADEL ADVISORS LLC	16,155	$10,533
Mega UBS Group AG	2,268	$1,478
Mega BARCLAYS PLC	23	$14
Large HRT FINANCIAL LP	13,705	$8

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mid Granite Investment Partners, LLC	27,053	$31,110
Large RENAISSANCE TECHNOLOGIES LLC	16,557	$19,040
Mega JPMORGAN CHASE & CO	975	$1,121

Filter: New 4 Increased 5 Reduced 5 Sold out 3 Unchanged 10

Holder type: Registered adviser 12 Adviser 1 Bank 6 Holding company 1 Unknown 4

Showing 24 of 24

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

PERCEPTIVE ADVISORS LLC

$6,439,534

65.58%

9,876,586

ADAGE CAPITAL PARTNERS GP, L.L.C.

$820,542

8.36%

1,258,501

ADAR1 Capital Management, LLC

$785,951

8.00%

1,205,447

Alyeska Investment Group, L.P.

$756,068

7.70%

1,159,615

Sio Capital Management, LLC

$455,740

4.64%

698,989

SILVERARC CAPITAL MANAGEMENT, LLC

$146,282

1.49%

224,360

Shaolin Capital Management LLC

$111,602

1.14%

171,170

VANGUARD CAPITAL MANAGEMENT LLC

$71,038

0.72%

108,954

Affinity Asset Advisors, LLC

$52,160

0.53%

80,000

GEODE CAPITAL MANAGEMENT, LLC

$51,582

0.53%

79,115

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	17,954	$11,706	22.7%	Defined
Held directly	61,161	$39,876	77.3%	Defined

VANGUARD FIDUCIARY TRUST CO

$35,065

0.36%

53,782

NORTHERN TRUST CORP

$20,130

0.21%

30,875

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	30,875	$20,130	100.0%	Defined

TORONTO DOMINION BANK

$16,300

0.17%

25,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TD SECURITIES (USA) LLC	25,000	$16,300	100.0%	Defined

Opaleye Management Inc.

$12,025

0.12%

18,444

XTX Topco Ltd

$11,835

0.12%

18,153

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	18,153	$11,835	100.0%	Defined

CITADEL ADVISORS LLC

$10,533

0.11%

16,155

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	16,155	$10,533	100.0%	Defined

CITIGROUP INC

$8,642

0.09%

13,255

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	13,255	$8,642	100.0%	Defined

BANK OF AMERICA CORP /DE/

$7,518

0.08%

11,531

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BOFA SECURITIES, INC.	11,531	$7,518	100.0%	Defined

Tower Research Capital LLC (TRC)

$4,208

0.04%

6,454

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	6,454	$4,208	100.0%	Defined

UBS Group AG

$1,478

0.02%

2,268

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	1	$0	0.0%	Defined
UBS Securities LLC	2,267	$1,478	100.0%	Defined

Crewe Advisors LLC

$326

0.00%

500

MORGAN STANLEY

$89

0.00%

137

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO. LLC	137	$89	100.0%	Defined

BARCLAYS PLC

$14

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	23	$14	100.0%	Defined

HRT FINANCIAL LP

0.00%

13,705

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Securities LLC	975	$1,121	100.0%	Defined

Key facts CIK 2006986 CUSIP 00534B100 Visit website Investor relations